[Closed] K-edge insert for Nukeproof top cap mount?

Hi guys!

So yesterday I had a bit of an Uncontrolled Dismount of my bike. I have a Garmin 520 mounted in a Nukeproof top cap mount, and I accidentally hit it with my knee. Broke a bit of plastic on the Garmin, but the plastic insert in the mount is borked. I checked all the usual places, and I cannot buy a seperate insert for the Nukeproof. There does, however, seem to be quite a lot of cheap K-edge inserts floating around... And they look exactly identical!

Can anyone confirm that these are interchangable? I find it quite wasteful to buy a complete mount if I can just buy the insert.